The system executes simple harmonic motion.

此系统产生简谐运动。

We've thought about oscillation now, simple harmonic motion.

我们现在考虑的是振动，简单的简谐运动。

The logarithmic spiral method is a good way of describing damped harmonic motion.

对数螺线方法是描述阻尼谐振动的一个好方法。

Harmonic Motion: experimental board, spring weight, loaded board, counterpoise, stopwatch.

简谐运动：实验板，弹簧秤，载重板，砝码，码表。

Now, as long as I am in the linear portion of the curve, I can generate a simple harmonic motion.

既然现在处在，曲线的线性区域内，可以弄出个简谐运动。